Turning and threading machine



May 22, 1923. 1,456,101

7 J. A. EDEN, JR

TURNING AND THREADING MACHINE Filed Oc t. 1, 1920 s Sheets-Shet 1 IIIVEIITUH Jarhes /7 Eden, Jr

BY M ATTORNEY May 22, 1923. 1,456,101

J. A, EDEN, JR

TURNING- AND THREADING MACHINE Filed Oct. 1, 1920 s Sheets-Sheet 2 [NYE/{T017 Jame fl Eden, Jr BY ATTORNEY May 22, 1923. 1,456,101

J.A.EDEN.JR

TURNING AND THREADING MACHINE Filed Oct. l920 3 Sheets-Sheet 3 lug/Iron N James 1% [dead/r /4 .arranusy Patented May 22',

llhtt ihilift p attain earner or:

JAMES A. EDEN, JR., SPRINGFIELD, IVIASSACHUSETTS, ASSJIGNOR TO WALTER H. FOFETER, OF NEV] YORK, N. Y.

TURNING- .AND THREAIDING IEACHIIIE.

Application filed October 1, 1920.

To all 107mm it may concern:

Be it known that I, JAMES A. EDEN, Jr, a citizen of the United States, and resident oi Springfield, Massachusetts, have invented certain new and useful Improvements in Turning and Threading Machines, or which the following is a specification.

My invention aims to provide certain improvements in machines of this class whereby the setting or adjusting thereof may be effected more easily, quickly and accurately than heretofore.-

The accompanying drawings illustrate embodiments of my invention.

Figure 1 is an elevation of a common style of staybolt machine with my improvements applied thereto, the diehead being shown in different positions in the two sections of the machine;

Fig. 2 is a plan of a turret lathe with my improvements applied thereto. T he remaining figures are details of the bolt machine of Fig. 1;

Figs. 3 and i are respectively a clan and frontelevation, partly in section, showing the cutter head and the holder in which it is mounted;

Fig. 5 is a side horizontal View of the head, with its holder shown in section, the head being in its working position;

Fig. 6 is a similar view with the head turned to the adjusting position.

Referring first to Fig. 1, the machine is shown in two sections, in one of which a forged blank may be turned and in the other of which a turned blank may be threaded. There may be more than two sections in such machines and any number of themmay be used for turning or for threading or for similar operations. In each section there is a blank holder 1 adapted to carry a blank 2 in vertical position .and a cutter head 3 or 4: sliding in guides formed by the posts 5. The term cutter heads is used to include heads carrying tools for turning the work or tools for threading it or similar tools;

In the case illustrated I have assumed that the head 3 carries turning cutters and the head t carries threading cutters or chasers. Each head is mounted in a holder 6 sliding in the guides mentioned and suspended by Serial No. 414,024.

rods 7 from a crosshead 8 which is supported from a strap running at the back over the pulley 9 on the shaft 10, the strap passing down over the forwardside of the pulley as shown at 11, and ending in a handle 12. The shaft 10 is driven in a direction to lift the cutter heads when the handle 12 is pulled down so as to cause the strap to bear on the pulley. On releasing the handle 12 the cutter head will move downward by gravity towards the blank and will turn or thread the same.

As above described, this is a well known type of machine. The cutters or chasers in such heads are arranged to be adjusted for different sizes of blank or for taking up wear, and to be exchanged for new cutters or chasers when they become dulled or excessively worn. The adjusting of the cutters is somewhat inconvenient when they are in their working position because of interference from the adjacent parts of the holders and of the machine and particularly because it is difiicult for the operator to look through the cutter heads in the axial direction. To avoid this difficulty I provide for shifting the cutter head in its holder to a position where the tools therein can be easily, quickly and accurately adjusted. For example, I have shown the cutter head 3 in F ig. 1 pivotally mounted in its holder 6 on a line transverse to its axis and turned so that it faces the operator. The head 4. is similarly pivoted in the support 6 but is shown in its working position, facing the blank 2.

The turret lathe of Fig. 2 has a chuck or blank holder 13 which, like the blank holder 1 of Fig. 1, is continuously rotated and carries the blank 2 in position to be engaged by a cutter head 14- when the lat er is fed toward the chuck. A number of such heads are carried in a turret 15 mounted on a table 16 which is advanced or retracted along the guides 17 as the hand wheel 18 is turned in one direction or the other. Each cutter head is mounted in a support 19 and is trunnioned therein on an axis transverse to the axis of the cutter head. I have shown three such cutter heads arranged around the turret. The one shown at 14 is in its working position, facing the blank. The one shown at 14 is also in its working position and will be brought to face the blanl: when the turret is properly turned. The one. at 14 is turned in its holder so as to bringit face upward and more accessible for adjusti'nent' of the tools therein.

The details of the mounting of a cutter head carrying 'bothturning and threading tools for the staybolt machine are shown in Flgs. 3 to 6 and 1t willbe understood that similar provisions may be made for various other turning and threading and similar 'machines, or that the plate "or ring 21 bar 27 connecting the two end portions together. The curved connecting member 27 of the holder has a top, flange 28 which overhangs the rear portion of the head and which carries a thumb screw 29 adapted to engage and screw into a threaded opening in the rear edge of the top plate 21 of the die thus holding it rigidly in its working position.

When access is desiredto the tools for the purpose of adjusting; or changing-them, the thumb screw 29 is unscrewed and the operator turns the head about the trun nions 23, 24 to bring the working face of the die head to the front. In the course of this movementa latch 30 pivoted at its rear end on the top plate of the die head is swung over against the flange 28 of the holder and dropped to the position shown in F 1g. 6 with its notched end engaging said flange and preventing the return of the holderto its working position until the required adjustments are completed. hen

the tools areproperly set the projecting; end 31 of the latch is lifted and the die head returns to its position and is fastened there by means of the thumb screw. The pivoting of the head at a point abovethe working parts thereof causes itto automatically return by gravity to its working position when released; and also causes it to project forward as indicated in dotted lines in F ig. 3 when it is turned to adjustingposition. This shifting of the head sidewise, in

addition to turning it, helps to more accessible.

In Fig. 4 I have indicated the construction of the head andthe location of the tools therein. The lower ring 32 carries the turning cutters 33 within it between a lower plate 34 and an upper plate 35;- the ring 32 being surrounded by a ring 33,

i make it and the plate 34 being fastened in place by bolts The dies 37 are carried within a ring 38 between the intermediate plate 35 and the top plate 21 abovereferred to. Ordinarily the simple openingand closing of the dies is effected by. devices on the outside of the die head and in some constructions. the individual tools may be separately adjusted from the outside. For re moval and replacement of the turning outters 33, the plate 34 has to be removed. And for similar access to the chasers 37 the plate 35 and the several parts below it have to be removed. In these operations of ad justment or removal, the shifting of the die toward the operator and particularly the turning of it from its workingposit-ion, enable the operator to see more plainly what he is doing and facilitate his 1113111171]: lation of the parts. The details of "the mounting of the tools in the cutter head are not illustrated in detail. They form no part of this invention and'may be arranged in anyone of a number of known ways.

Though I have described with great particularity of detail certain embodiments of.

my invention, yet it is not to beunderstood therefrom that theinvention is restricted to the particular embodiments shown. Various modifications thereof in detail and in the arrangement of the parts beinade by those skilled in the art Without departure from the invention as defined in the followingclaims.

WhatI claim is: a j

'1. A machine of the class described having a blank holder and a cutter head and means for feeding one of said parts toward and away from the other, and a holder in which said cutter head is pivotally mounted on a line transverse to its axis sothatit can be turned from its working position to a'more convenient position for easily, quickly and accurately adjusting or setting tools in said head.

2. A machine of the class described having a holder and a cutter head carried in said holder and movable therein to a work ing position facing the blank and to an adjustingposition facing in a different direction. p

3. A machine of the class described having. a holder'and a cutter. head pivotally mounted in said holder on a line transverse to its axis and located near one end of the holder so that it can be turnedfrom its Working position and at the same time shifted laterally therefrom."

4. A machine of the class described having a blank holder adapted to carrya blank in vertical position, a cutter head which in Working position faces the blank, and means for feeding one of said par-ts toward and away from the other, said cutter head being movably mounted so that it may be faced horizontally to facilitate adjustment or setting of tools in said head.

5. A. machine of the class described having a blank holder adapted to carry a blank in vertical position, a cutter head and a holder for said cutter head movable toward and away from the blank holder, said cutter head being pivoted in its holder so as to swing from a position with its axis vertical to a position with its axis transverse to the vertical.

In witness whereof I have hereunto signed my name.

JAMES A. EDEN, JR. 

